Zobrazeno 1 - 10
of 45
pro vyhledávání: '"John M Mason Jr"'
Publikováno v:
Journal of Professional Issues in Engineering Education and Practice. 135:109-116
Contemporary visions of engineering depict a deepening professionalism, a broadening sphere of competence with technology, and an enhanced social role. Professional societies have increasingly focused on the knowledge, skills, and attitudes necessary
Autor:
John M Mason Jr, Richard J. Porter
Publikováno v:
Journal of Transportation Engineering. 134:450-458
Current work zone design and traffic control guidance is based on desirable speed outcomes; knowledge related to actual speed outcomes of design and traffic control decisions is limited. The objective of this research is to investigate relationships
Autor:
John M Mason Jr, Eric T. Donnell
Publikováno v:
Accident Analysis & Prevention. 38:590-599
Median barrier warrant criteria were developed in the 1970s and generally remain unchanged today. Vehicle travel, including both traffic volumes and operating speeds, have increased over this same time period. Encroachments into the median, and subse
Autor:
Eric T. Donnell, John M Mason Jr
Publikováno v:
Journal of Transportation Engineering. 132:269-281
Median design policies for high-speed, divided highways are investigated to assess existing median barrier warrant criteria. Safety and cost-effectiveness analyses were conducted to determine relationships between median-related crashes and geometric
Autor:
Eric T. Donnell, John M Mason Jr
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1897:55-63
Models of median-related crash severity were developed by using roadway inventory and crash records for Pennsylvania Interstate highways. Cross-median and median barrier crashes formed the sample of crash types considered. Data were collected to mode
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1784:91-99
Cross-median collisions (CMCs) on high functional class roadways are a concern because of the potential economic and social losses that often accompany these crashes. The Pennsylvania Department of Transportation (PENNDOT) design policy suggests prot
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1701:95-103
A research effort is progressing to develop a rational process for designing roadway geometric elements on low-speed urban streets and using a “target”operating speed as the preselected design speed. The goal is to provide geometric street design
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1701:32-41
The current AASHTO policy for sight distance at Stop-controlled intersections is based on a model of the acceleration performance of a minor-road vehicle turning left or right onto a major road and the deceleration performance of the following major
Autor:
C M Poe, John M Mason Jr
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1737:18-25
Studies have documented the significant effect of horizontal curvature on operating speed on two-lane rural highways. The geometric design of these facilities emphasizes the forgiving roadside to accommodate the higher vehicular speeds. High-speed ge
Publikováno v:
Transportation Research Part A: Policy and Practice. 33:199-216
The current AASHTO policy for sight distance at stop-controlled intersections is based on a model of the acceleration performance of a minor-road vehicle turning left or right onto a major road and the deceleration performance of the following major-